Whats the best way to make a square hole in a round piece of material, without a broach? The round rod needs to be split, so it can be placed over a 5/8 square rod, and then be able to slide along that square rod
The problem: I need a round bar, with a 5/8" square hole in the center, to go over the square "run fowards/stop/run reverse" rod that runs the length of the bed, under the acme threading screw, and the feed rod.
The lathe is missing the run/stop/reverse lever and assembly, so I want to make one. Pretty simple..but Ive been banging my head over the best way to make something that simple. I finally did accomplish it..but it was a serious pain in the ass.
I ultimately milled a half depth 5/8 wide groove in a 5" long chunk of scrap stock, cut it in half so I had two halves, then milled all sides so it was semi square, then chucked it in a 4 jaw, indicated on a 5/8 round stock slipped into the square hole, then turned to diameter,about half the lenght, then removed, then put into a 3 jaw, clamping on the already turned secton, then re-turned the last half to match the first.
There has to be an easier way ( the shaper blew a drive belt..so its on the Fix list)
This round with square hole gizmo..will be installed inside of a bore that will be bolted to the bottom of the carraige, with the run/stop/reverse rod running throuigh it. The assembly will remain fixed..the round with square, will be the actuator for the swtich rod..using a handle
Gunner
"Pax Americana is a philosophy. Hardly an empire. Making sure other people play nice and dont kill each other (and us) off in job lots is hardly empire building, particularly when you give them self determination under "play nice" rules.
Think of it as having your older brother knock the shit out of you for torturing the cat." Gunner